\documentclass[standalone]{standalone}  % 关键：用 standalone 类
\usepackage{tikz, amssymb}
\tikzset{every picture/.style={line width=0.75pt}} 
\usepackage{tikz, amssymb} % 必须加载tikz宏包
\usepackage[utf8]{inputenc} % 支持特殊字符
\tikzset{every picture/.style={line width=0.75pt}} 

\begin{document}  

\begin{tikzpicture}[x=0.75pt,y=0.75pt,yscale=-1,xscale=1]
%uncomment if require: \path (0,300); %set diagram left start at 0, and has height of 300

%Straight Lines [id:da53067643160021] 
\draw    (130,119.5) -- (130,168) ;
\draw [shift={(130,170)}, rotate = 270] [color={rgb, 255:red, 0; green, 0; blue, 0 }  ][line width=0.75]    (10.93,-3.29) .. controls (6.95,-1.4) and (3.31,-0.3) .. (0,0) .. controls (3.31,0.3) and (6.95,1.4) .. (10.93,3.29)   ;
\draw [shift={(130,117.5)}, rotate = 90] [color={rgb, 255:red, 0; green, 0; blue, 0 }  ][line width=0.75]    (10.93,-3.29) .. controls (6.95,-1.4) and (3.31,-0.3) .. (0,0) .. controls (3.31,0.3) and (6.95,1.4) .. (10.93,3.29)   ;
%Straight Lines [id:da734317610471281] 
\draw    (280,119.5) -- (280,168) ;
\draw [shift={(280,170)}, rotate = 270] [color={rgb, 255:red, 0; green, 0; blue, 0 }  ][line width=0.75]    (10.93,-3.29) .. controls (6.95,-1.4) and (3.31,-0.3) .. (0,0) .. controls (3.31,0.3) and (6.95,1.4) .. (10.93,3.29)   ;
\draw [shift={(280,117.5)}, rotate = 90] [color={rgb, 255:red, 0; green, 0; blue, 0 }  ][line width=0.75]    (10.93,-3.29) .. controls (6.95,-1.4) and (3.31,-0.3) .. (0,0) .. controls (3.31,0.3) and (6.95,1.4) .. (10.93,3.29)   ;

% Text Node
\draw (51,94.4) node [anchor=north west][inner sep=0.75pt]    {$A=D\cup ( A-A_{1}) \cup ( A_{1} -A_{2}) \cup ( A_{2} -A_{3}) \cup ( A_{3} -A_{4}) \cup \cdots ,$};
% Text Node
\draw (51,173.4) node [anchor=north west][inner sep=0.75pt]    {$A=D\cup ( A_{2} -A_{3}) \cup ( A_{1} -A_{2}) \cup ( A_{4} -A_{5}) \cup ( A_{3} -A_{4}) \cup \cdots .$};
% Text Node
\draw (113,132.4) node [anchor=north west][inner sep=0.75pt]    {$\varphi $};
% Text Node
\draw (263,132.4) node [anchor=north west][inner sep=0.75pt]    {$\varphi $};


\end{tikzpicture}
\end{document}